Lin time Fri Apr 10 22:21:17 MSK 2020
PHP time Fri, 10 Apr 2020 22:21:17 +0300

hourly uptime back for 20 days:
      hh     11111111112222
dd 012345678901234567890123:
21 ++++++++++++++++++++++++
22 ++++++++++++++++++++++++
23 ++++++++++++++++++++++++
24 ++++++++++++++++++++++++
25 ++++++++++++++++++++++++
26 ++++++++++++++++++++++++
27 ++++++++++++++++++++++++
28 ++++++++++++++++++++++++
29 ++++++++++++++++++++++++
30 ++++++++++++++++++++++++
31 ++++++++++++++++++++++++
01 ++++++++++++++++++++++++
02 ++++++++++++++++++++++++
03 ++++++++++++++++++++++++
04 ++++++++++++++++++++++++
05 ++++++++++++++++++++++++
06 ++++++++++++++++++++++++
07 ++++++++++++++++++++++++
08 ++++++++++++++++++++++++
09 ++++++++++++++++++++++++
10 +++++++++++++++++++++++?
dd 0h2345678901234567890123

Array
(
    [0] => smartctl 6.6 2016-05-31 r4324 [i686-linux-4.15.0-88-generic] (local build)
    [1] => Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
    [2] => 
    [3] => Smartctl open device: /dev/sda1 failed: Permission denied
)