2023 Calendar starts each month on the wrong day

Hi

The 2023 Calendar on my site starts each month on the wrong day, see attachment



First of October 2023 should start on a Sunday, the calendar on my site starts October on Monday

Every month in 2023 has the same issue,

Can anyone assist please

regards

Ian

PHP Version : 8.0.30

MySQL Version : 8.0.34

Server Information : Linux uk3.fcomet.com 4.18.0-477.21.1.lve.1.el8.x86_64 #1 SMP Tue Sep 5 23:08:35 UTC 2023 x86_64

*** CONFIG NOT SAVED*** 

Fix jQuery? : Yes

Load JEvents Bootstrap CSS? : Yes

Max Input Vars ? : 10000

Club code set? : No  

User Agent : Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36  

Joomla : 4.3.4

component_com_jevents : 3.6.68

module_mod_jevents_cal : 3.6.68

module_mod_jevents_custom : 3.6.68

module_mod_jevents_filter : 3.6.68

module_mod_jevents_latest : 3.6.68

module_mod_jevents_legend : 3.6.68

module_mod_jevents_switchview : 3.6.68

plugin_actionlog_jevents : 3.6.68 (not enabled)

plugin_content_jevents : 3.6.68

plugin_finder_jevents : 3.6.68

plugin_installer_jeventsinstaller : 3.6.68

plugin_search_eventsearch : 3.6.68

plugin_system_gwejson : 3.6.68