Why the encoded date and uploaded date is different?

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I downloaded 2 videos from a social media. The first video shows the exact time when it was uploaded in the encoded date and time. But another one shows the time when the video was actually recorded in the encoded date and time.

The first video was uploaded at 9:41 UTC. The metadata…
"General
Complete name : XXXX_A5458845C9.mp4
Format : MPEG-4
Format profile : Base Media
File size : 5.58 MiB
Duration : 20 s 756 ms
Overall bit rate : 2 255 kb/s
Encoded date : UTC 2020-07-17 09:41:02
Tagged date : UTC 2020-07-17 09:41:02
com_android_version : 10

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline
Format level : 3.1
Format settings, CABAC : No
Format settings, Reference frames : 1 frame
Format settings, GOP : M=1, N=90
Codec ID : avc1
Duration : 20 s 756 ms
Bit rate : 1 995 kb/s
Width : 720 pixels
Height : 1 280 pixels
Display aspect ratio : 0.562
Frame rate mode : Variable
Frame rate : 29.871 FPS
Minimum frame rate : 13.451 FPS
Maximum frame rate : 39.718 FPS
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.072
Stream size : 4.94 MiB (88%)
Title : VideoHandle
Language : English
Encoded date : UTC 2020-07-17 09:41:02
Tagged date : UTC 2020-07-17 09:41:02
Color range : Limited
Color primaries : BT.601 PAL
Transfer characteristics : BT.709
transfer_characteristics_Original : BT.601
Matrix coefficients : BT.601
Codec configuration box : avcC

Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec
Codec ID : mp4a-40-2
Duration : 20 s 715 ms
Duration_FirstFrame : 21 ms
Bit rate mode : Constant
Bit rate : 256 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 647 KiB (11%)
Title : SoundHandle
Language : English
Encoded date : UTC 2020-07-17 09:41:02
Tagged date : UTC 2020-07-17 09:41:02"

And the 2nd one uploaded on jun 12
""General
Complete name : XXXX_1F5185FEB8.mp4
Format : MPEG-4
Format profile : Base Media
File size : 60.3 MiB
Duration : 29 s 328 ms
Overall bit rate : 17.2 Mb/s
Encoded date : UTC 2021-03-21 23:24:47
Tagged date : UTC 2021-03-21 23:24:47
com_android_version : 10

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High
Format level : 4
Format settings, CABAC : Yes
Format settings, Reference frames : 1 frame
Format settings, GOP : M=1, N=30
Codec ID : avc1
Duration : 29 s 328 ms
Bit rate : 17.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 30.000 FPS
Minimum frame rate : 27.406 FPS
Maximum frame rate : 30.010 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.273
Stream size : 59.4 MiB (98%)
Title : VideoHandle
Language : English
Encoded date : UTC 2021-03-21 23:24:47
Tagged date : UTC 2021-03-21 23:24:47
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Codec configuration box : avcC

Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec
Codec ID : mp4a-40-2
Duration : 29 s 291 ms
Bit rate mode : Constant
Bit rate : 256 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 915 KiB (1%)
Title : SoundHandle
Language : English
Encoded date : UTC 2021-03-21 23:24:47
Tagged date : UTC 2021-03-21 23:24:47""

After downloading, in the details option of my phone shows the downloaded time of the first video, but the 2nd video shows the time when it was recorded. My question is why there is such difference?

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