Getting the present time as a seconds timestamp?

In Dyalog APL, the function ⎕TS provides today's current year, month, day, hours, minutes, seconds and so on, but can I obtain a timestamp counting seconds since, say, 1970-01-01 (a Unix timestamp)?

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Follow the reasoning

jkv23 Oct

With days, available at https://dfns.dyalog.com/n_days.htm

      )copy dfns days
C:\Program Files\Dyalog\Dyalog APL-64 17.1 Unicode\ws\dfns.dws saved Thu Aug 22 18:35:12 2019
      86400×(days ⎕TS)-(days 1970 1 1)
1570618042

Another option is the over operator ⍥, arriving with Dyalog version 18.0

      )copy dfns days
C:\Program Files\Dyalog\Dyalog APL-64 17.1 Unicode\ws\dfns.dws saved Thu Aug 22 18:35:12 2019
      over←{(⍺⍺ ⍺)⍵⍵ ⍺⍺ ⍵} ⍝ over operator definition
      86400×⎕TS days over - 1970 1 1
1570618349

aurel13 hours ago Permalink
Dyalog introduced ⎕DT (https://help.dyalog.com/latest/Content/Language/System%20Functions/dt.htm) in 18.0 to translate between various representations of dates and times. Format 20 represents UNIX timestamps, giving this expression for obtaining one now:
```
      20 ⎕DT ⊂⎕TS
1659344012
```
In fact, passing a single character on the right (a military timezone code) makes it assume the present time. However, that conversion treats its input date/time as UTC already, so obtaining an accurate result requires explicitly choosing UTC with uppercase "Z" (letter case matters for these zone codes):
```
      20 ⎕DT 'Z'
1659358612
```

Getting the present time as a seconds timestamp?

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