ntptime.getTimestamp returns incorrect timestamp.
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 version: UIFlow: v1.9.5 code: text = M5Label('text', x=38, y=137, color=0x000, font=FONT_MONT_30, parent=None) 
 text2 = M5Label('text', x=38, y=117, color=0x000, font=FONT_MONT_30, parent=None)
 ntp = ntptime.client()
 ts = ntp.getTimestamp()
 year = ntp.year()
 month = ntp.month()
 day = ntp.day()
 text.set_text('%s' % (ts))
 text2.set_text('%s-%s-%s' % (year, month, day))expected: 
 corrected timestamp as now (2022-09-19 ish).
 saw: some strange timestamp in around 1992. (716937583)I'm wondering whether this is within expectation? 
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 @chhsiao have you set the correct timeszone or tried a different time zone? 
 1992 would imply that it doesn’t have a valid time click connection
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 hi @ajb2k3 ~ Thank you so much for the reply. 
 the year-month-day (text2) shows expected date-time though.
 I would assume that we do have successful ntp connection because of text2.
 In my real code, the time-server is set as our internal time-server, and the timezone is set as 0 (for UTC).
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  hi @ajb2k3 ~ Thank you so much for the reply. As you can see from the screenshot: 
 the year-month-day (text2) shows expected date-time though.
 I would assume that we do have successful ntp connection because of text2.
 In my real code, the time-server is set as our internal time-server, and the timezone is set as 0 (for UTC).
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 Looks like this ntptime timestamp is relative to 01/01/2000, and not to 01/01/1970 like the Epoch Unix timestamp. 
